铬铁矿及(或)菱镁矿化通常是与蛇绿岩有关.Chromite and / or magnesite mineralization is usually related to the ophiolites.菱镁矿是由橄榄岩风化形成的.The magnesite originated from the peridotite by weathering.大约80%的氧化镁产量来自菱镁矿.Magnesite deposits account fo...
Ellen would keep me abreast of the progress by phone.埃伦会通过电话及时向我通报进展情况。Ellen felt both despair and anger at her mother.埃伦对她的母亲感到既绝望又生气。Ellen Malos, in her introduction to 'The Politics of Housework', provides a...